RUMP_HFS(8)             NetBSD System Manager's Manual             RUMP_HFS(8)

NAME
     rump_hfs -- mount a hfs image with a userspace server

SYNOPSIS
     file-system PUFFS
     pseudo-device putter

     rump_hfs [options] image mountpoint

DESCRIPTION
     NOTE! This manual page describes features specific to the rump(3) file
     server.  Please see mount_hfs(8) for a full description of the available
     command line options.

     The rump_hfs utility can be used to mount hfs file systems.  It uses
     rump(3) and p2k(3) to facilitate running the file system as a server in
     userspace.  As opposed to mount_hfs(8), rump_hfs does not use file system
     code within the kernel and therefore does not require kernel support
     except puffs(4).  Apart from a minor speed penalty there is no downside
     with respect to in-kernel code.

     rump_hfs does not require using vnconfig(8) for mounts from regular files
     and the file path can be passed directly as the image parameter.  In
     fact, the use of vnconfig(8) is discouraged, since it is unable to prop-
     erly deal with images on sparse files.

     In case the image contains multiple partitions, the desired partition
     must be indicated by appending the token ``%DISKLABEL:p%'' to the image
     path.  The letter ``p'' specifies the partition as obtained via
     disklabel(8).  For example, to mount partition ``e'' from image
     /tmp/wd0.img, use ``/tmp/wd0.img%DISKLABEL:e%''.

     It is recommended that untrusted file system images be mounted with
     rump_hfs instead of mount_hfs(8).  Corrupt file system images commonly
     cause the file system to crash the entire kernel, but with rump_hfs only
     the userspace server process will dump core.

     To use rump_hfs via mount(8), the flags -o rump and -t hfs should be
     given.  Similarly, rump_hfs is used instead of mount_hfs(8) if ``rump''
     is added to the options field of fstab(5).

SEE ALSO
     p2k(3), puffs(3), rump(3), mount_hfs(8)

HISTORY
     The rump_hfs utility first appeared in NetBSD 5.0.

NetBSD 6.1.3                   November 21, 2010                  NetBSD 6.1.3

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